I think that the argument for Breaking Bad not romanticizing white crime goes even deeper than showing that Walt is a monster; monsters can be romanticized too, but BB avoids that by constantly - CONSTANTLY - showing how Walt's actions are destroying his friends, family, and everybody/everything he ever cared for. It also relentlessly deconstructs every possibly sympathetic reason he tries to give for his decisions. It's such a brutal, ruthless show. I'm loving it.